Metamorphic petrology
View article: Hydrogen storage in a heterogeneous sandstone formation: dimensioning and induced hydraulic effects
Hydrogen storage in a heterogeneous sandstone formation: dimensioning and induced hydraulic effects Open
Large-scale energy storage in the geological subsurface (e.g. by storing hydrogen gas) may help to mitigate effects of a fluctuating energy production arising from the extensive use of renewable energy sources. The applicability of hydroge…
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The principles of helium exploration Open
Commercial helium systems have been found to date as a serendipitous by-product of petroleum exploration. There are nevertheless significant differences in the source and migration properties of helium compared with petroleum. An understan…
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Geology and hydrocarbon potential of the East African continental margin: a review Open
The East African margin has a complex structure due to multiple phases of rifting with different stretching directions. The main phase of rifting leading to Indian Ocean opening lasted from the Late Pliensbachian to the Bajocian ( c. 183 –…
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The Messinian salinity crisis: open problems and possible implications for Mediterranean petroleum systems Open
A general agreement on what actually happened during the Messinian salinity crisis (MSC) has been reached in the minds of most geologists but, in the deepest settings of the Mediterranean Basin, the picture is still far from being finalize…
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History of the development of Permian–Cretaceous rifts in East Africa: a series of interpreted maps through time Open
East Africa represents the most rifted portion of crust on the planet, having been subjected to numerous phases of extension from Permian to Recent times. The first rifting phase commences in the Permian as the ‘Karoo’ set of narrow half-g…
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Geodynamical framework and hydrocarbon plays of a salt giant: the NW Mediterranean Basin Open
The NW Mediterranean Basin developed during the Oligocene–Miocene rifting of the Eastern Iberian–European magma-poor continental margin. The margin developed as a result of back-arc extension associated with the rollback of the retreating …
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Controls on the distribution of volcanism and intra-basaltic sediments in the Cambo–Rosebank region, West of Shetland Open
The NE Atlantic margin is one of the last frontier areas of hydrocarbon exploration within the UK Continental Shelf. In 2004, a major oil and gas discovery (Rosebank) was made within Paleocene–Eocene-age lavas in the Faroe–Shetland Basin. …
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Seismic imaging of Late Miocene (Messinian) evaporites from Western Mediterranean back-arc basins Open
An analysis of multichannel seismic reflection data was conducted focusing on the comparison between the Messinian Salinity Crisis (MSC) and Plio-Quaternary (PQ) evolution of the eastern Sardo-Provençal and northern Algero-Balearic basins …
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Do deformation bands matter for flow? Insights from permeability measurements and flow simulations in porous carbonate rocks Open
We investigate the permeability and flow effects of deformation bands in porous granular carbonate rocks in Malta and use results from flow simulations to discuss the practical implications of deformation bands in carbonate and siliciclast…
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Compressed air energy storage in porous formations: a feasibility and deliverability study Open
Compressed air energy storage (CAES) in porous formations is considered as one option for large-scale energy storage to compensate for fluctuations from renewable energy production. To analyse the feasibility of such a CAES application and…
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The impact of fine-scale reservoir geometries on streamline flow patterns in submarine lobe deposits using outcrop analogues from the Karoo Basin Open
Improved prediction of the recovery of oil-in-place in basin-floor fan reservoirs requires accurate characterization and modelling of multiscale heterogeneities. The use of outcrop analogues is a key tool to augment this process by documen…
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Structural and lithological controls on the architecture of igneous intrusions: examples from the NW Australian Shelf Open
Rift-related magmatism resulting in widespread igneous intrusions has been documented in various basins, including the Faroe Shetland Basin (UK), the Voring and Møre basins (Norway), and along the NW Shelf of Australia. Seismic mapping, co…
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Quantification of solubility trapping in natural and engineered CO <sub>2</sub> reservoirs Open
Secure retention of CO 2 in geological reservoirs is essential for effective storage. Solubility trapping, the dissolution of CO 2 into formation water, is a major sink on geological timescales in natural CO 2 reservoirs. Observations duri…
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Automating hyperparameter optimization in geophysics with Optuna: A comparative study Open
Deep learning has gained attraction amongst geophysicists for solving complex longstanding problems. Nevertheless, proper hyperparameter optimization methodologies remain critically underexplored in geophysical deep learning research. This…
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Geology of the Chang 7 Member oil shale of the Yanchang Formation of the Ordos Basin in central north China Open
We present a review of the Chang 7 Member oil shale, which occurs in the middle–late Triassic Yanchang Formation of the Ordos Basin in central north China. The oil shale has a thickness of 28 m (average), an area of around 30 000 km 2 and …
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THE GEOLOGY OF THE AĞVANİS METAMORPHIC ROCKS AND NEIGHBOURING FORMATIONS Open
— The area studied is located in Northeast Anatolia between the Pontide and Tauride orogenic belts. The metamorphic rocks called Ağvanis Group are bounded to the north and south by faults of the North Anatolian Fault Zone; in the east and …
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Optimising development and production of naturally fractured reservoirs using a large empirical dataset Open
Naturally fractured reservoirs are important contributors to global petroleum reserves and production. Existing classification schemes for fractured reservoirs do not adequately differentiate between certain types of fractured reservoirs, …
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Naturally occurring underpressure – a global review Open
Several mechanisms have been suggested as drivers of naturally occurring underpressure. However, the phenomenon is largely underrepresented in literature. Previous studies have focused on individual cases in North America, where challenges…
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Structural and stratigraphic evolution of the Mid North Sea High region of the UK Continental Shelf Open
Interpretation of newly acquired seismic and legacy well data has led to a greater understanding of the Upper Paleozoic–Recent geological evolution of the Mid North Sea High (MNSH), an under-explored region of the North Sea. The position o…
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An integrated approach for fractured basement characterization: the Lancaster Field, a case study in the UK Open
To date, naturally fractured crystalline basement reservoirs (‘basement’) in the UK Continental Shelf (UKCS) have been underexplored and underexploited. Over the last 12 years, Hurricane Energy have explored and evaluated the potential of …
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Using simulation and production data to resolve ambiguity in interpreting 4D seismic inverted impedance in the Norne Field Open
The Norne Field started production in 1997 and up to 2006 the field experienced intense production activity, making the Norne benchmark case an ideal candidate to explore the challenges in interpreting complex time-lapse seismic data. Seis…
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Environmental Geology of Lake and Porter Counties, Indiana - An Aid to Planning Open
Indiana Geological Survey Special Report 11; Indiana Geological Survey Environmental Study 8
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Two-step wireline log analysis of overpressure in the Bekapai Field, Lower Kutai Basin, Indonesia Open
As part of our effort to improve pore-pressure estimation in diagenetically altered mudstones, we have used wireline logs to estimate disequilibrium compaction and unloading contributions to the hard overpressure encountered in the Bekapai…
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Identification and characterization of geological formations with CO <sub>2</sub> storage potential in Portugal Open
Carbon capture, utilization and storage (CCUS) is considered a major part of the Portuguese strategy for reducing CO 2 emissions. Some industrial sectors, the most prominent being the cement sector, require the implementation of CO 2 stora…
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Investigation of CO <sub>2</sub> storage in a saline formation with an angular unconformity at the caprock interface Open
Studies of oil reservoirs show that unconformities may occur between the reservoir and the caprock. At the boundary where the unconformity occurs, there may be a layer of higher permeability compared to the caprock. Such traps may occur at…
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Feasibility of a 785 nm diode laser in Raman spectroscopy for characterizing hydrocarbon-bearing fluid inclusions in Mumbai Offshore Basin, India Open
Detection of the chemical constituents of hydrocarbons in the hydrocarbon-bearing fluid inclusions in diagenetic mineral cements, secondary fractures and overgrowths could be a useful indicator of the nature of oil in a basin. Microscope-b…
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3D seismic interpretation and fault slip potential analysis from hydraulic fracturing in the Bowland Shale, UK Open
The Bowland Shale Formation is one of the most promising targets for unconventional exploration in the United Kingdom, with estimated resources large enough to supply the country's entire natural gas consumption for 50 years. However, deve…
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On the geologic efficiency of seismic prospecting in studying different types of non-anticlinal traps of Azerbaijan Open
This article focuses on the application of seismic methods, the study of their capabilities in prospecting and exploration of non-anticlinal traps, which are widespread in Azerbaijan.This article describes the materials of 3D seismic explo…
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Kicks and their significance in pore pressure prediction Open
Knowledge of subsurface formation pressures is critical for the calibration of predictions and models needed for safe drilling of deep wells, historically for oil and gas wells. The same details apply to the sequestration of CO 2 , ephemer…
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Rivers, reefs and deltas: geomorphological evolution of the Jurassic of the Farsund Basin, offshore southern Norway Open
In many petroleum-bearing, data-poor ‘frontier’ basins, source, reservoir and seal distribution is poorly constrained, making it difficult to identify petroleum systems and play models. However, 3D seismic reflection data provide an opport…